解析字符串操作码以列出操作码

Question

我正在尝试修复从ValueError: Unknown format code 'x' for object of type 'unicode'进行解析的parser，将其转换为0xeb, 0x19字节代码， 我想如何改善if format == "sc_arr":来解决此问题

def parser(obj, syntax,format):
    lines = subprocess.check_output(['objdump', '-d', '-M', syntax, obj])
    lines = lines.split(b'Disassembly of section')[1]
    lines = lines.split(b'\n')[3:]
    shellcode = ""
    code = []

    for l in lines:
        l = l.strip()

        tabs = l.split(b'\t')
        if (len(tabs) < 2):
            continue
        bytes = tabs[1].strip()
        bytes = bytes.split(b' ')
        sh3llshock = ""
        if format == "sc_arr":
            for byte in bytes:
                sh3llshock += " " + byte.decode("utf-8")
        else:
            for byte in bytes:
                sh3llshock += "\\x" + byte.decode("utf-8")
        shellcode += sh3llshock
        show_shell =  (32, '"'+sh3llshock+'"')
        code.append(show_shell)
    return shellcode

if __name__ == '__main__':
    if sys.argv[2] == "sc_app":
        opcode = parser('shellcode', 'intel', sys.argv[2])
        shellcode = re.sub("(.{32})", "\\1\n",opcode, 0, re.DOTALL)
        print shellcode
    elif sys.argv[2] == 'sc_arr':
        opcode = parser('shellcode', 'intel', sys.argv[2])
        print ' '.join([format(x, '02x') for x in opcode])
    else:
        print "not found"